Home / 289,747.80-434,621.70-261,754.20

Finding the Fourth Proportional to 289,747.80, 434,621.70 and 261,754.20

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Solution

The fourth proportional to 289,747.80, 434,621.70 and 261,754.20 is: 392,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,747.80 : 434,621.70 = 261,754.20 : x
  2. Step 2: Convert to fraction form
    289,747.80/434,621.70 = 261,754.20/x
  3. Step 3: Cross multiply
    289,747.80x = 434,621.70 × 261,754.20
  4. Step 4: Simplify right side
    289,747.80x = 113,764,055,386.14
  5. Step 5: Solve for x
    x = 113,764,055,386.14/289,747.80
  6. Step 6: Final answer
    x = 392,631.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.